파트넘버.co.kr SX1278 데이터시트 PDF


SX1278 반도체 회로 부품 판매점

137 MHz to 1020 MHz Low Power Long Range Transceiver



Semtech Corporation 로고
Semtech Corporation
SX1278 데이터시트, 핀배열, 회로
SX1276/77/78/79
WIRELESS, SENSING & TIMING
DATASHEET
SX1276/77/78/79 - 137 MHz to 1020 MHz Low Power Long Range Transceiver
GENERAL DESCRIPTION
The SX1276/77/78/79 transceivers feature the LoRaTM long
range modem that provides ultra-long range spread
spectrum communication and high interference immunity
whilst minimising current consumption.
Using Semtech’s patented LoRaTM modulation technique
SX1276/77/78/79 can achieve a sensitivity of over -148dBm
using a low cost crystal and bill of materials. The high
sensitivity combined with the integrated +20 dBm power
amplifier yields industry leading link budget making it
optimal for any application requiring range or robustness.
LoRaTM also provides significant advantages in both
blocking and selectivity over conventional modulation
techniques, solving the traditional design compromise
between range, interference immunity and energy
consumption.
These devices also support high performance (G)FSK
modes for systems including WMBus, IEEE802.15.4g. The
SX1276/77/78/79 deliver exceptional phase noise,
selectivity, receiver linearity and IIP3 for significantly lower
current consumption than competing devices.
ORDERING INFORMATION
Part Number
Delivery
MOQ / Multiple
SX1276IMLTRT
T&R
3000 pieces
SX1277IMLTRT
T&R
3000 pieces
SX1278IMLTRT
T&R
3000 pieces
SX1279IMLTRT
T&R
3000 pieces
QFN 28 Package - Operating Range [-40;+85°C]
Pb-free, Halogen free, RoHS/WEEE compliant product
KEY PRODUCT FEATURES
LoRaTM Modem
168 dB maximum link budget
+20 dBm - 100 mW constant RF output vs. V supply
+14 dBm high efficiency PA
Programmable bit rate up to 300 kbps
High sensitivity: down to -148 dBm
Bullet-proof front end: IIP3 = -11 dBm
Excellent blocking immunity
Low RX current of 9.9 mA, 200 nA register retention
Fully integrated synthesizer with a resolution of 61 Hz
FSK, GFSK, MSK, GMSK, LoRaTMand OOK modulation
Built-in bit synchronizer for clock recovery
Preamble detection
127 dB Dynamic Range RSSI
Automatic RF Sense and CAD with ultra-fast AFC
Packet engine up to 256 bytes with CRC
Built-in temperature sensor and low battery indicator
APPLICATIONS
Automated Meter Reading.
Home and Building Automation.
Wireless Alarm and Security Systems.
Industrial Monitoring and Control
Long range Irrigation Systems
Rev. 4 - March 2015
©2015 Semtech Corporation
Page 1
www.semtech.com


SX1278 데이터시트, 핀배열, 회로
SX1276/77/78/79
WIRELESS, SENSING & TIMING
Table of contents
Section
DATASHEET
Page
1. General Description ................................................................................................................................................. 9
1.1. Simplified Block Diagram ................................................................................................................................. 9
1.2. Product Versions ............................................................................................................................................10
1.3. Pin Diagram ................................................................................................................................................... 10
1.4. Pin Description ...............................................................................................................................................11
1.5. Package Marking ...........................................................................................................................................12
2. Electrical Characteristics ....................................................................................................................................... 13
2.1. ESD Notice .................................................................................................................................................... 13
2.2. Absolute Maximum Ratings ........................................................................................................................... 13
2.3. Operating Range............................................................................................................................................ 13
2.4. Thermal Properties ........................................................................................................................................ 13
2.5. Chip Specification ..........................................................................................................................................14
2.5.1. Power Consumption .................................................................................................................................. 14
2.5.2. Frequency Synthesis................................................................................................................................. 14
2.5.3. FSK/OOK Mode Receiver .........................................................................................................................16
2.5.4. FSK/OOK Mode Transmitter ..................................................................................................................... 17
2.5.5. Electrical Specification for LoRaTM Modulation ........................................................................................19
2.5.6. Digital Specification ...................................................................................................................................22
3. SX1276/77/78/79 Features.................................................................................................................................... 23
3.1. LoRaTM Modem ............................................................................................................................................ 24
3.2. FSK/OOK Modem .......................................................................................................................................... 24
4. SX1276/77/78/79 Digital Electronics ..................................................................................................................... 25
4.1. The LoRaTM Modem ..................................................................................................................................... 25
4.1.1. Link Design Using the LoRaTM Modem ....................................................................................................26
4.1.2. LoRaTM Digital Interface ...........................................................................................................................34
4.1.3. Operation of the LoRaTM Modem............................................................................................................. 36
4.1.4. Frequency Settings ...................................................................................................................................37
4.1.5. Frequency Error Indication ........................................................................................................................ 37
4.1.6. LoRaTM Modem State Machine Sequences .............................................................................................38
4.1.7. Modem Status Indicators........................................................................................................................... 46
4.2. FSK/OOK Modem .......................................................................................................................................... 46
4.2.1. Bit Rate Setting ......................................................................................................................................... 46
4.2.2. FSK/OOK Transmission ............................................................................................................................ 47
4.2.3. FSK/OOK Reception ................................................................................................................................. 48
4.2.4. Operating Modes in FSK/OOK Mode ........................................................................................................ 54
4.2.5. Startup Times ............................................................................................................................................56
4.2.6. Receiver Startup Options .......................................................................................................................... 59
4.2.7. Receiver Restart Methods......................................................................................................................... 60
4.2.8. Top Level Sequencer ................................................................................................................................ 61
Rev. 4 - March 2015
©2015 Semtech Corporation
Page 2
www.semtech.com




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( semtech )

SX1278 transceiver

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